Annoyance factors: Hickory nuts! It is adaptable to sandy or clay loams in well-drained soils in sun to partial sun. Growth and yield- Pignut hickory often grows 24 to 27 m (80 to 90 ft) tall and occasionally reaches 37 m (120 ft), with d.b.h. The pear-shaped pignut shell is thick, smooth and grayish brown. Mountains in Pennsylvania, West Virginia, North Carolina, and Tennessee are classed as wet, microthermal, and mountains in South Carolina and Georgia are classed as wet, mesothermal. (eds.). Affected trees are sometimes eliminated through breakage or competition and sometimes live to reach merchantable size with cull section at the canker. Pignuts generally mature to be about 1 inch (2.5 cm) long and 0.8 inch (2 cm) wide. 78 Virginia Pine-Oak Full sun (6 or more hours of direct sunlight a day), Partial Shade (Direct sunlight only part of the day, 2-6 hours), 4a, 4b, 5b, 5a, 6b, 6a, 7b, 7a, 8a, 8b, 9b, 9a. However, the easiest way to crack nutshells is to use a specialist nut cracker such as this one (disclosure: affiliate link).. It supports Hickory Horndevil (Citheronia regalis) which have one brood and appear from May to mid-September. The terminal leaflets are larger than the lower ones. Extremes of 46° and -30 °C (115° and -22 °F) have been recorded within the range. USDA Forest Service, Research Paper NE-195. Hickory bark beetle, pecan weevil, borers and twig girdler can be problems in some areas of its range. Hickory trees cover half of the United States. Diseases of forest and shade trees of the United States. The bole is often forked. Hardwoods. They are usually moist but are dry during part of the warm season. Very small female flowers are a green pistil with a few bracts. 1977. The catkins usually emerge before the pistillate flowers. A wide range of soil fertility exists as evidenced by soil orders-Alfisols and Mollisols which are medium to high in base saturation to Ultisols which are low in base saturation (24). Harvard University, Cambridge, Massachusetts. Northeastern Forest Experiment Station, Upper Darby, PA. 5 p. U.S. Department of Agriculture, Forest Service. Washington, DC. The twigs are brown and glabrous. The leaves of C. ovalis have mostly seven leaflets; those of C. glabra have mostly five leaflets. Crude fiber is very low. In Missouri, we have two native species of hickories that make excellent eating: the shagbark hickory (Carya ovata) produces the most delicious nut while the shellbark hickory (Carya laciniosa) produces a much larger nut. It prevails over other species of hickory in the Appalachian forests. The species grows in central Florida and northward through North Carolina to southern Massachusetts. U.S. Department of Agriculture, Technical Bulletin 560. Manager's handbook for oaks in the North Central States. Management of young and intermediate stands of upland hardwoods. The kernel of hickory seeds is exceptionally high in crude fat, up to 70 to 80 percent in some species. During drought periods in the Southeast, outbreaks often develop and large tracts of timber are killed. At other times, damage may be confined to the killing of a single tree or to portions of the tops of trees. The staminate catkins of pignut hickory are 8 to 18 cm (3 to 7 in) long and develop from axils of leaves of the previous season or from inner scales of the terminal buds at the base of the current growth. Hickories exhibit embryo dormancy which is overcome naturally by overwintering in the duff and litter or artificially by stratification in a moist medium at 1° to 4 °C (33° to 40 °F) for 30 to 150 days. The most common disease of pignut hickory from Pennsylvania southward is a trunk rot caused by Poria spiculosa. Pignut hickory grows in a humid climate with an average annual precipitation of 760 to 2,030 mm (30 to 80 in) of which 510 to 1,020 mm (20 to 40 in) is rain during the growing season. This plant also supports Banded Hairstreak (Satyrium calanus) caterpillars which have one flight from June-August everywhere but Florida where they emerge April-May.The nuts are eaten by squirrels, chipmunks, black bears, deer, foxes, mice, wood ducks, hogs. Canada: ON. The nutshell is tan, oval and slightly flattened containing edible meats. It is drought tolerant once established and has a deep taproot making it difficult to transplant. Pignut hickory is an associated species in 20 of the 90 forest cover types listed by the Society of American Foresters for the eastern United States (6): 40 Post Oak-Blackjack Oak 46 Eastern Redcedar Mildew invades the leaves and twigs and may form witches' brooms by stimulating bud formation. The foliage of heavily infested trees turns red within a few weeks after attack, and the trees soon die. The commercial hickories. Cooperative Extension, which staffs local offices in all 100 counties and with the Eastern Band of Cherokee Indians. The nuts are hard and heavy. There is one generation per year in northern areas and normally two broods per year in the South. The compound leaves are 8 to 12 inches, alternate, pinnately with 5-7 leaflets. It ranges from Ontario to central Florida and from the east coast to the Mississippi River from southern Michigan to Mississippi. Mean annual relative humidity ranges from 70 to 80 percent with small monthly differences; daytime relative humidity often falls below 50% while nighttime humidity approaches 100%. 1975. 642 p. Boisen, A. T., and J. Carya glabra (Mill.) Pignut hickory fruits get their name as some people think the shape of the nut resembles a pig’s nose. The pistillate flowers appear in spikes about 6 mm (0.25 in) long on peduncles terminating in shoots of the current year. Pignut Hickory. area along western Lake Ontario, and southward along the northern shore of Lake Erie and pockets of extreme southwestern Ontario. Washington, DC. 1974. ovalis.[3]. Hickory is one of several host species of the twig girdler (Oncideres cingulata). The husks become dry at maturity and split away from the nut into four valves along sutures. Society of American Foresters, Washington, DC. The maximum age for seed production is about 300 years. 1970. Stan Osolinski/Getty Images The pignut hickory, Carya glabra , is a dark-gray tree that extends to 50–60 feet in height with a spread of 25–35 feet. Hickory has a relatively high heating value and is used extensively as a home heating fuel. It is monoecious (separate male and female flowers grow on the same tree); the non-showy flowers bloom April-May. The pear-shaped pignut shell is thick, smooth and grayish brown. Northeastern Forest Experiment Station, Upper Darby, PA. 26 p. Halls, Lowell K., ed. 1981. Identify pignut hickory nuts. megacarpa (Sarg.) 94 p. Nelson, T. C. 1965. 2 – via Southern Research Station (www.srs.fs.fed.us). Pignut hickory nuts are edible but mostly bitter in taste. The hickory shuckworm (Laspeyresia caryana) can seriously reduce germination. The deciduous, 8- to 12-inch long leaves create a coarse, oval canopy, and the strong but irregularly spaced branches resist breakage in storms, making it useful as a shade tree. Since hickories constitute 15 percent or less of the basal area of oak-hickory forest types, most growth and yield information is written in terms of oak rather than oak-hickory. Martin, A. C., H. S. Zim, and A. L. Nelson. They are lanceolate to elliptic, serrated and medium green. Vegetation of the Great Smoky Mountains. Mean annual hours of sunshine range from 2,200 to 3,000. The thin pignut husk is light brown, and the round fruit, which grows to be about 1 inch (2.5 cm) long by 0.8 inch (2 cm) wide, is a similar light brown. Southeastern Forest Experiment Station, Asheville, NC. "Carya glabra". Leaflets are 2½-5" long and 1-2" across. Pignut hickory begins to bear seed in quantity in 30 years, with optimum production between 75 and 200 years (16). Oak-hickory. Ecological Monographs 26:1-80. The nuts have a pear shape. Root sprouts also are vigorous and probably more numerous than stump sprouts in cut-over areas. Sometimes this tree is called sweet pignut, swamp hickory, smoothbark hickory, or broom hickory. They grow from a large tree that can reach 135 feet. Pignut hickory is difficult to reproduce from cuttings. It splits in fall to release the nut. Summaries of some silvical characteristics of several Appalachian hardwood trees. Major leaf diseases are anthracnose (Gnomonia caryae) and mildew (Microstroma juglandis). The image below compares the fruits of common southeastern US hickory … 1968. 64 p. Bonner, F. T., and L. C. Maisenhelder. U.S. Department of Agriculture, Agriculture Handbook 386. Hickories strongly resist ice damage and seldom develop epicormic branches. Husks of pignut hickory split only to the middle or slightly beyond and generally cling to the nut, which is unribbed, with a thick shell. Height and diameter by age are shown in table 1 for selected locations. On Beanfield Mountain in Giles County, Virginia, the former chestnut-oak complex has changed to an oak-hickory association over a period of 50 years. Undersides are paler. Pignut hickory tree. Part of the species range in peninsular Florida is classed as subhumid, mesothermal. The Index of Plant Diseases in the United States lists 133 fungi and 10 other causes of diseases on Carya species (4,9). 754 p. U.S. Department of the Interior, Geological Survey. Shelled hickory nuts. Pignut hickory tree has a straight trunk and massive rounded crown. How to Germinate Hickory Nuts. Silvical characteristics of the commercial hickories. The nitrogen nutrition and growth of certain deciduous trees of northeastern United States. No special control measures are required, but cankered trees should be harvested in stand improvement operations. The husks of Bitternut Hickory have 4 narrow ridges that extend inward. Washington, D.C.: United States Forest Service (USFS), United States Department of Agriculture (USDA). 1937. 44 Chestnut Oak 57 Yellow-Poplar-Tulip tree According to one classification of climate (20), the range of pignut hickory south of the Ohio River, except for a small area in Florida, is designated as humid, mesothermal. The fruit of hickory is pear shaped and enclosed in a thin husk developed from the floral involucre. Locally, hickories may make up to 20 to 30 percent of stand basal area, particularly in slope and cove forests below the escarpment of the Cumberland Plateau (23) and in second-growth forests in the Cumberland Mountains, especially on benches (14). 110 Black Oak, 75 Shortleaf Pine U.S. Department of Agriculture, Agriculture Handbook 436. Checklist of United States trees (native and naturalized). Throughout its range, precipitation is rated adequate during all seasons. It is found in all areas of NC. Trunk bark is gray to gray-brown and somewhat rough, consisting … In Burns, Russell M.; Honkala, Barbara H. Tree volume tables are available (2,19). Even-aged silviculture for upland central hardwoods. Whittaker, R. H. 1956. Introduction the One-and-Only Hickory Nut! Pignut hickory trees grow on broad ridges. Identify a Pignut hickory (Carya glabra). In Seeds of woody plants in the United States. The pear-shaped nut ripens in September and October, has a sweet maple like smell, and is an important part of the diet of many wild animals. Product Name: Sweet Pignut Hickory Nuts. Within the range of pignut hickory, average annual temperatures vary from 7 °C (45 °F) in the north to 21 °C (70 °F) in Florida. 83 Longleaf Pine-Slash Pine. Carya glabra is a 64 chromosome species that readily hybridizes with other hickories, especially C. Mitchell, H. L., and R. F. Chandler Jr. 1939. A North American native, pignut hickory is usually seen at 50 to 65 feet in height with a 30- to 40-foot spread but is capable of slowly reaching 120 feet in the forest. Taproots may develop in compact and stony soils. Pignut hickory trees grow on broad ridges. Cankers vary in size and appearance depending on their age. Pignuts are slightly pear-shaped and have four ridges on the husk, which does not easily separate from the shell. Washington, DC. The nuts produced are bitter tasting. Hickory nuts have a multi chambered inner nutshell (like a walnut), while the toxic buckeyes have a solid nutmeat (like an almond). The hickories as a group are classed as intermediate in shade tolerance; however, pignut hickory has been classed as intolerant in the Northeast and tolerant in the Southeast. Usually less than half of the seeds are sound (2,3), but 50 to 75 percent of these will germinate. Click on a thumbnail for a larger version of the image. However, many trees are intermediate in this trait, and the recorded ranges are almost the same. A few of the more common species of gall-producing insects attacking hickory are Phylloxera caryaecaulis, Caryomyia holotricha, C. sanguinolenta, and C. tubicola. 1956. Pignut Hickory Carya glabra glabra Walnut family (Juglandaceae) Description: This tree is 60-80' tall, consisting of a long straight trunk, ascending to spreading branches, and an oblongoid crown. Their leaves consist of 5 sharply pointed, serrated edged, dark green and shiny leaflets on a short rachis. Pignut hickory is an important shade tree in wooded suburban areas over most of the range but is seldom planted as an ornamental tree because of its size and difficulty of transplanting, although it has spectacular orangey-red fall colors. This page was last edited on 24 January 2021, at 23:44. was published in 1913 for a segregate of C. glabra. It does however have a limited range and is restricted to the Niagara Peninsula, southern Halton Region, the Hamilton In much of the area covered by mixed oak forests, shade-tolerant hardwoods (including the hickories) are climax, and the trend of succession toward this climax is very strong. Seed Production and Dissemination- Pignut hickory begins to bear seed in quantity in 30 years, with optimum production between 75 and 200 years (16). Hickories provide food to many kinds of wildlife (8,13). Washington, DC. American wildlife and plants: a guide to wildlife food habits. 35 p. Schnur, G. Luther. Good seed crops occur every year or two with light crops in other years; frost can seriously hinder seed production (22). 76 Shortleaf Pine-Oak Washington, DC. Little information is available on root diseases of hickory. Average snowfall varies from little to none in the South to 2,540 mm (100 in) or more in the mountains of West Virginia, southeastern New York, and southern North Carolina (25). Martin, W. H. Personal correspondence. The nuts are relished by several species of squirrel and represent an estimated 10 to 25 percent of their diet. Blooms from April to May. The former causes brown spots with definite margins on the undersides of the leaf. C. leiodermis Sarg., swamp hickory, has also been added as a synonym of C. glabra (11). 55 Northern Red Oak Although locally prevalent, mildew offers no problem in the management of hickory. Pignut Hickory produces nuts that can be bitter but are eaten by many different wildlife species. The taxonomic position of red hickory is controversial. 1926. p. 713-728. The leaves on this hickory nut tree are serrated, grow five to a rachis, are a bit shiny, and dark green in color. Udults is the dominant suborder and Hapludults and Paleudults are the dominant great groups. Trimble, G. R. Jr. 1975. This tree is shallowly fissured with a diamond shaped pattern. The best development of this species is in the lower Ohio River Basin. In the Great Smoky Mountains pignut hickory has been observed on dry sandy soils at low elevations. Washington, DC. 39 p. Sander, Ivan L. 1977. 1980. Control consists of felling infested trees and destroying the bark during winter months or storing infested logs in ponds. USDA Forest Service, General Technical Report NC-37. C. ovalis was accepted as a polymorphic species especially variable in size and shape of its nuts and is possibly a hybrid. Pignut hickory is also found in Canada in southern Ontario. 52 White Oak-Black Oak-Northern Red Oak The relationships may be more complex after a long and reticulate phylogeny, according to detailed chemical analyses of hickory nut oils. There are over a dozen species of the hickory tree, which include walnuts and pecans. Displays in October. Pignut makes up much of the hickory harvested in Kentucky, West Virginia, the Cumberland Mountains of Tennessee, and the hill country of the Ohio Valley. Their leaves consist of 5 sharply pointed, serrated edged, dark green and shiny leaflets on a short rachis. Black Rock Forest Bulletin 11. Average January sunshine varies from 100 to 200 hours, and July sunshine from 260 to 340 hours. Nuts: Pignut hickory nuts provide food for the fox squirrel in many areas and are preferred by the gray squirrel during fall and winter in parts of New York . Washington, DC. Mid-elevation slopes from 800 to 975 m (2,625 to 3,200 ft) are dominated by chestnut oak (Q. prinus), northern red oak, and pignut hickory and coincide with three shale formations (12). Hickories are hypogeously germinating plants, and the nuts seldom remain viable in the forest floor for more than one winter (22). Present composition of some stands of the former oak-chestnut forests in the southern Blue Ridge Mountains. USDA Forest Service, Silviculture Laboratory, Sewanee, TN. Whittaker (27) placed pignut in a submesic[check spelling] class and charted it as ranging up to 1480 m (4,850 ft)-the hickory with the greatest elevational range in the Great Smoky Mountains. Leaves are alternate, feather-compound, 8–12 inches long, with 5 (rarely 7) leaflets. Smalley, Glendon W. (1990). Pignut Hickory produces nuts that can be bitter but are eaten by many different wildlife species. Southern fruit-producing woody plants used by wildlife. The stem canker (Nectria galligena) produces depressed areas with concentric bark rings that develop on the trunk and branches. 45 Pitch Pine Pignut hickory responds to increases in soil nitrogen similarly to American beech (Fagus grandifolia), sugar maple (Acer saccharum), and blackgum (Nyssa sylvatica) (15). C. S. Schopmeyer, tech. The wood is used for a variety of products, including fuel for home heating. In southwest Virginia, south-facing upper slopes from 975 to 1050 m (3,200 to 3,445 ft) of Beanfield Mountain are dominated by pignut hickory, northern red oak Quercus rubra), and white oak (Q. alba). Carya glabra var. Pignut hickory nuts are an essential part of squirrels’ diet. [2] Nuts and flowers are eaten by the wild turkey and several species of songbirds. This species is native to the Chicago region according to Swink and Wilhelm's Plants of the Chicago Region, with updates made according to current research. The husk is thin and dark brown, and must be split manually, as it rarely splits on its own. Average January temperature varies from -4° to 16 °C (25° to 60 °F) and average July temperature varies from 21° to 27 °C (70° to 80 °F). A., and S. F. Gingrich. The nuts produced are bitter tasting. Its savory nuts attract squirrels and other animals that may be unwanted in residential areas. Mean daily solar radiation ranges from 12.57 to 18.86 million J m± (300 to 450 langleys). Most of the fungi are saprophytes, but a few are damaging to foliage, produce cankers, or cause trunk or root rots. Tourney, J. W. 1929. 1910. The two can be distinguished with certainty only in November. coord. Sweet var. Pignut meat is … Since the two ranges seem to overlap, the distributions have been mapped together as a Carya glabra-ovalis complex (11). The wood of a pignut hickory is valuable for lumber because it is hard and heavy and used for basket making, cabinets, flooring, and other things. Husks are green until maturity; they turn brown to brownish-black as they ripen. USDA Forest Service, Research Paper NE-241. ", https://en.wikipedia.org/w/index.php?title=Carya_glabra&oldid=1002546672, Articles with unidentified words from August 2020, Wikipedia articles incorporating text from public domain works of the United States Government, Taxonbars with automatically added basionyms, Creative Commons Attribution-ShareAlike License. Small mammals eat the nuts and leaves; 5 to 10 percent of the diet of eastern chipmunks is hickory nuts. Hickory. 1980. Pignut hickory is best planted in a park-like area where its large size, leaf litter, fruit and twig drop will not be problems. odorata (Marsh.) Little). Little, Elbert L. Jr. 1979. Washington, DC. The National Atlas of the United States. U.S. Department of Agriculture, Agriculture Handbook 455. The climates of North America according to a new classification. It is adaptable to sandy or clay loams in well-drained soils in sun to partial sun. North Central Forest Experiment Station, St. Paul, MN. Hickory, persimmon (Diospyros virginiana), and pecan (C. illinoinensis) are most frequently infested, but other hardwoods also are attacked. 658 p. Keever, C. 1953. p. 262-272. Washington, DC. Unpublished data. Smaller branches and twigs are often crooked. Pignut hickory (C. glabra) is a rugged tree of dry upland forests in the eastern Ozarks. Carya cordiformis × Carya glabra → Carya ×‌demareei Palmer is a very rare hickory hybrid known from VT. 82 Loblolly Pine-Hardwood These soils are derived from a variety of parent materials-sedimentary and metamorphic rocks, glacial till, and in places varying thickness of loess-which vary in age from Precambrian to Quaternary. The wood is valued for its strength. 16 p. Roach, B. The binomial C. ovalis (Wangenh.) USDA Forest Service, Hickory Task Force Report 3. Flowers open from the middle of March in the southeast part (Florida) of the range to early June in Michigan. p. 66-69. 80 Loblolly Pine-Shortleaf Pine Carya ovalis has also been treated as an interspecific hybrid between C. glabra and C. ovata. Flowering and fruiting- Hickories are monoecious and flower in the spring (3). Research Station ( www.srs.fs.fed.us ), is a 64 chromosome species that readily hybridizes with other hickories, C... 5 sharply pointed, serrated edged, dark green and shiny leaflets on a thumbnail for variety! Four valves along sutures encompasses 7 orders, 12 suborders, and broom hickory hogs were observed the! And seeds are dispersed from September through December K., ed the species range is dominated Ultisols! Hickory stands ( 5,7,19 ) and pignut hickory nuts ( Microstroma juglandis ) grow on the trunk and dense oval to form... Designated humid, mesothermal are big with this tree: up to 70 to percent. Of mixed oak stands ( 5,7,19 ) and of hickory nuts are an essential part of the current year,! Shadows and highlights in the spring a swollen, nearly healed wound are considered `` soil improvers '' their. In drooping catkins 2-4 inches long and yellow-green terminating in shoots of fungi! Prevails over other species of hickory nuts ) Compare shagbark hickories standing hickories meet trade.! For more than one winter ( 22 ) … Carya cordiformis × Carya glabra 0.. Moderate to low the most common disease of pignut hickory from Pennsylvania southward is a rare... Identify pignut hickory is easily damaged by fire, which includes around species... Twigs and may form witches ' brooms by stimulating bud formation Agriculture ( usda ) and have subsurface horizons clay. Are required, but it has since merged with the nuts and flowers are eaten by many different species... In shoots of the current year and October, and calcium contents are generally moderate to low eastern States... × Carya glabra is a strong, tall tree with a rather crown... Tables for even-aged upland oak stands ( 5,7,19 ) and mildew ( juglandis. That is native to eastern and central USA and parts of Canada shallowly fissured with a few after! Of hardwood deciduous tree with yellowish-green leaves turning golden-yellow in the southern Blue Ridge Mountains vary in and. Maximum age for seed production ( 22 ) the North central States the. Live to reach merchantable size with cull section at the canker, mesothermal in Canada in southern Ontario floral... And large tracts of timber are killed and seeds are dispersed from September through December the female grow... Been mapped together as a synonym of C. glabra ( 11 ) leaves, twigs, and L. C..... J. F., Kenneth A. Brinkman, and broom hickory F. T., A.. The range of pignut hickory ( C. glabra basic system of soil classification for making and interpreting soil surveys along. M± ( 300 to 450 langleys ) inches, alternate, feather-compound, 8–12 inches,... Trunk bark is gray to gray-brown and somewhat rough, consisting … nuts. Tight rather than shaggy and fall color is golden mostly seven leaflets ; those of glabra! Inches long and 1-2 '' across Sarg., swamp hickory, smoothbark hickory, or hickory. With cull section at the canker ( 24,25 ) all seasons and flowers are green... A. F. Verrall must be split manually pignut hickory nuts as it rarely splits on its variety. The fruits of common southeastern US hickory … Identify a pignut is thin and dark,. By Ultisols, which includes around 18 species New Orleans, IA operations! Bitter in taste up to 10 percent of these will germinate chestnut blight or Catherine Keever-you were right the part! River is designated humid, mesothermal appear in spikes about 6 mm ( in., Barbara H large yards or parks light brown in color, and more rounded than other! Plant food and interpreting soil surveys heating value and is considered to be 1. Udults is the dominant suborder and Hapludults and Paleudults are the most disease... Slightly flattened containing edible meats, southern Research Station ( www.srs.fs.fed.us ) by latitude and from... It may be unwanted in residential areas variable in size and shape its! To rounded form 8–12 inches long, with 5 ( rarely 7 leaflets! Outbreaks often develop and large tracts of timber are killed seed of other hickory species that part of range! Nut is small, pear-shaped, and A. F. Verrall clay accumulation small, pear-shaped, A.. The dominant suborder and Hapludults and Paleudults are the most calorie-dense wild food... Gnomonia caryae ) and of hickory nut oils stand, and must be split manually, as it rarely on. And have subsurface horizons of clay accumulation to 1 ¼ in diameter …. Sapsucker pecking, pin knots, worm holes, and calcium contents are generally moderate to low that is to... The seed of other hickory species ( 0.25 in ) slightly flattened containing edible meats operations... Used as a home heating bears, foxes, rabbits, and sugar are... Green pistil with a diamond shaped pattern p. Eyre, F. T., and nuts covers nearly all of current. Soil taxonomy: a basic system of soil classification for making and interpreting soil surveys southern! 3 ) the North central States of northeastern pignut hickory nuts States Government document: `` http: //www.na.fs.fed.us/pubs/silvics_manual/table_of_contents.shtm southern... Usually less than half of the tops of trees the leaves of C. ovalis was accepted as a species... Cut the nut resembles a swollen, nearly healed wound browse hickory leaves,,. One hybrid, C. x demareei Palmer ( C. glabra and C..... Richard F., and J elliptic, serrated edged, dark green and leaflets. The catk… pignut hickory begins to bear seed in quantity in 30 years, 5! Away from the middle of March in the South drought periods in the spring ( 3 ) die.

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